I think pricing trends monitoring aka camelcamelcamel.com would be enough for Walmart to figure this out. They don't need to actually talk to each other IMO
Likely. They’ll probably stick some ML or data science person on it at Walmart Labs who ends up doing better at it than CamelCamelCamel because it’s his/her full time job and because they have a PhD in statistics or some similar field. Also because Walmart has near unlimited money to throw at these kinds of problems.
